Item specifics・Color: lock: Transparent Key: BlueMaterial: Crystal shell + copper coreDimension: Lock: 65(L) x 34(W) x 13mm(T)/2.56 x 1.34 x 0.51inch Key: Length: 68mm/2.86inch Description:This transparent lock cylinder is very widely used in training tools for locksmith. It helps them to improve their skills with its transparent body design、 so that can easily see how it works. We guarantee that the components of this item are all in good condition. Thanks for your supporting and purchasing.Note: the size maybe a little error due to manual measurement.Feature:Transparent body design、 you can see the internal structure and working mechanism clearly.Built in copper core、 durable and anti-wear.7 pins lock on both sides.Come with 2 blue keys、 different key of different lock cylinder. Packing List1 x Transparent Lock Cylinder2 x Blue Keys